Former White House aide I. Lewis “Scooter” Libby has shown no remorse for corrupting the legal system and deserves to spend 2 1/2 to 3 years in prison for obstructing the CIA leak investigation, Special Prosecutor Patrick Fitzgerald said Friday.

Libby, the former chief of staff to Vice President Dick Cheney and an assistant to President Bush, is the highest-ranking White House official convicted since the Iran-Contra affair two decades ago.